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| author | David Henningsson <david.henningsson@canonical.com> | 2013-12-18 10:46:04 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-12-18 12:40:45 +0100 |
| commit | da4a7a3926d09c13ae052ede67feb7285e01e3f5 (patch) | |
| tree | 191c7ac5aa619a2f658fa55192d334ad1bc81eeb /sound/pci | |
| parent | f0e9c08065dc31210fc4cf313c4ecaa088187dc5 (diff) | |
| download | linux-da4a7a3926d09c13ae052ede67feb7285e01e3f5.tar.bz2 | |
ALSA: hda - Explicitly keep codec powered up in hdmi_present_sense
This should help us avoid the following mutex deadlock:
[] mutex_lock+0x2a/0x50
[] hdmi_present_sense+0x53/0x3a0 [snd_hda_codec_hdmi]
[] generic_hdmi_resume+0x5a/0x70 [snd_hda_codec_hdmi]
[] hda_call_codec_resume+0xec/0x1d0 [snd_hda_codec]
[] snd_hda_power_save+0x1e4/0x280 [snd_hda_codec]
[] codec_exec_verb+0x5f/0x290 [snd_hda_codec]
[] snd_hda_codec_read+0x5b/0x90 [snd_hda_codec]
[] snd_hdmi_get_eld_size+0x1e/0x20 [snd_hda_codec_hdmi]
[] snd_hdmi_get_eld+0x2c/0xd0 [snd_hda_codec_hdmi]
[] hdmi_present_sense+0x9a/0x3a0 [snd_hda_codec_hdmi]
[] hdmi_repoll_eld+0x34/0x50 [snd_hda_codec_hdmi]
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/patch_hdmi.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index f5060fc7c303..977db17db26c 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1496,11 +1496,14 @@ static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll) * specification worked this way. Hence, we just ignore the data in * the unsolicited response to avoid custom WARs. */ - int present = snd_hda_pin_sense(codec, pin_nid); + int present; bool update_eld = false; bool eld_changed = false; bool ret; + snd_hda_power_up(codec); + present = snd_hda_pin_sense(codec, pin_nid); + mutex_lock(&per_pin->lock); pin_eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE); if (pin_eld->monitor_present) @@ -1573,6 +1576,7 @@ static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll) jack->block_report = !ret; mutex_unlock(&per_pin->lock); + snd_hda_power_down(codec); return ret; } |